Wayne said: "Since you must have vent holes in your bodies,and supers,do you place a wire screen or something similar over the vent holes to keep the Queen from escaping through them?" Wayne, when I have a queen excluder under my hive to force swarms to self-retrieve, I am careful to have no other openings available. Are you wondering about drone escapes? My sytem traps the drones in the hive. Moreover, when I inspect the hive, I wait until it is too late in the day for the bees to think of swarming while the hive is open. Dan --------------------------------- Do You Yahoo!? HotJobs, a Yahoo! service - Search Thousands of New Jobs